Featured Research

from universities, journals, and other organizations

Robotic Therapy Holds Promise For Cerebral Palsy

Date:

May 21, 2009

Source:

Massachusetts Institute of Technology

Summary:

Over the past few years, MIT engineers have successfully tested robotic devices to help stroke patients learn to control their arms and legs. Devices can help children learn to grasp and manipulate objects. Now, they're building on that work to help children with cerebral palsy.

Over the past few years, MIT engineers have successfully tested robotic devices to help stroke patients learn to control their arms and legs. Now, they're building on that work to help children with cerebral palsy.

Related Articles

"Robotic therapy can potentially help reduce impairment and facilitate neuro-development of youngsters with cerebral palsy," says Hermano Igo Krebs, principal research scientist in mechanical engineering and one of the project's leaders.

Krebs and others at MIT, including professor of mechanical engineering Neville Hogan, pioneered the use of robotic therapy in the late 1980s, and since then the field has taken off.

"We started with stroke because it's the biggest elephant in the room, and then started to build it out to other areas, including cerebral palsy as well as multiple sclerosis, Parkinson's disease and spinal cord injury," says Krebs.

The team's suite of robots for shoulder-and-elbow, wrist, hand and ankle has been in clinical trials for more than 15 years with more than 400 stroke patients. The Department of Veterans Affairs has just completed a large-scale, randomized, multi-site clinical study with these devices.

All the devices are based on the same principle: that it is possible to help rebuild brain connections using robotic devices that gently guide the limb as a patient tries to make a specific movement.

When the researchers first decided to apply their work to children with cerebral palsy, Krebs was optimistic that it would succeed, because children's developing brains are more plastic than adults', meaning they are more able to establish new connections.

The MIT team is focusing on improving cerebral palsy patients' ability to reach for and grasp objects. Patients handshake with the robot via a handle, which is connected to a computer monitor that displays tasks similar to those of simple video games.

In a typical task, the youngster attempts to move the robot handle toward a moving or stationary target shown on the computer monitor. If the child starts moving in the wrong direction or does not move, the robotic arm gently nudges the child's arm in the right direction.

Krebs began working in robotic therapy as a graduate student at MIT almost 20 years ago. In his early studies, he and his colleagues found that it's important for stroke patients to make a conscious effort during physical therapy. When signals from the brain are paired with assisted movement from the robot, it helps the brain form new connections that help it relearn to move the limb on its own.

Even though a stroke kills many neurons, "the remaining neurons can very quickly establish new synapses or reinforce dormant synapses," says Krebs.

For this type of therapy to be effective, many repetitions are required — at least 400 in an hour-long session.

Results from three published pilot studies involving 36 children suggest that cerebral palsy patients can also benefit from robotic therapy. The studies indicate that robot-mediated therapy helped the children reduce impairment and improve the smoothness and speed of their reaching motions.

The researchers applied their work to stroke patients first because it is such a widespread problem — about 800,000 people suffer strokes in the United States every year. About 10,000 babies develop cerebral palsy in the United States each year, but there is more potential for long-term benefit for children with cerebral palsy.

"In the long run, people that have a stroke, if they are 70 or 80 years old, might stay with us for an average of 5 or 6 years after the stroke," says Krebs. "In the case of cerebral palsy, there is a whole life."

Most of the clinical work testing the device with cerebral palsy patients has been done at Blythedale Children's Hospital in Westchester County, N.Y., and Spaulding Rehabilitation Hospital in Boston. Other hospitals around the country and abroad are also testing various MIT-developed robotic therapy devices.

Krebs' team has focused first on robotic devices to help cerebral palsy patients with upper body therapy, but they have also initiated a project to design a pediatric robot for the ankle.

Among Krebs' and Hogan's collaborators on the cerebral palsy work are Dr. Mindy Aisen '76, former head of the Department of Veterans Affairs Office of Research and Development and presently the director and CEO of the Cerebral Palsy International Research Foundation (CPIRF); Dr. Joelle Mast, chief medical officer, and Barbara Ladenheim, director of research, of Blythedale Children's Hospital; and Fletcher McDowell, former CEO of the Burke Rehabilitation Hospital and a member of the CPIRF board of directors.

MIT's work on robotic therapy devices is funded by CPIRF and the Niarchos Foundation, the Department of Veterans Affairs, the New York State NYSCORE, and the National Center for Medical Rehabilitation Research of the Eunice Kennedy Shriver National Institute of Child Health and Human Development.

Mar. 31, 2015 — Video games not only sharpen the visual processing skills of frequent players, they might also improve the brain's ability to learn those skills, according to a new study. Gamers showed faster ... full story

Mar. 31, 2015 — Children who play video games for more than three hours a day are more likely to be hyperactive, get involved in fights and not be interested in school, says a new study. It examined the effects of ... full story

Mar. 31, 2015 — Using the assessment tool ForWarn, US Forest Service researchers can monitor the growth and development of vegetation that signals winter's end and the awakening of a new growing season. Now these ... full story

Mar. 31, 2015 — A team of engineers and biologists reports new progress in using computer modeling and 3D shape analysis to understand how the unique grasping tails of seahorses evolved. These prehensile tails ... full story

Mar. 31, 2015 — Searching the Internet for information may make people feel smarter than they actually are, according to new research. In a series of experiments, participants who searched for information on the ... full story

Mar. 30, 2015 — Neuroscientists are taking inspiration from natural motor control to design new prosthetic devices that can better replace limb function. Researchers have tested a range of brain-controlled devices ... full story

Mar. 30, 2015 — Speaking in public is the top fear for many people. Now, researchers have developed an intelligent user interface for 'smart glasses' that gives real-time feedback to the speaker on volume modulation ... full story

Mar. 30, 2015 — To help scientists make sense of 'brain big data,' researchers have used data mining to create www.neuroelectro.org, a publicly available website that acts like Wikipedia, indexing physiological ... full story

Bionic Ants Could Be Tomorrow's Factory Workers

Reuters - Innovations Video Online (Mar. 30, 2015) — Industrious 3D printed bionic ants working together could toil in the factories of the future, says German technology company Festo. The robotic insects cooperate and coordinate their actions and movements to achieve a common aim. Amy Pollock reports.
Video provided by Reuters

Internet Giants Drive Into the Electric Vehicle Space

Reuters - Business Video Online (Mar. 30, 2015) — Internet companies are looking to disrupt the auto industry with new smart e-vehicles, but widespread adoption in Asia may not be cured by new Chinese investments. Pamela Ambler reports.
Video provided by Reuters

Talking Dinosaur Toy Has All The Answers

Rooftop Comedy (Mar. 29, 2015) — A company has invented a new toy that can have an entire conversation with kids. It’s called CogniToy, and it’s a plastic dinosaur that is powered by IBM’s super computer, Watson. So, it basically knows the answer to every question, and can even tell jokes, stories, and remember things. Parents – would you buy CogniToy?
Video provided by Rooftop Comedy

July 30, 2014 — New research may give children with cerebral palsy better treatment options in the future – and it all starts with looking at how cerebral palsy patients move compared to their peers. One of the ... full story

July 15, 2014 — Babies born into families in which someone has cerebral palsy are at an increased risk of having the condition, suggests new research. Cerebral palsy is the most common cause of physical disability ... full story

Mar. 3, 2011 — Cerebral palsy is a neurodevelopmental condition that affects motor function, more often in children born prematurely. Because cerebral palsy is a result of brain injury received shortly before, ... full story

ScienceDaily features breaking news and videos about the latest discoveries in health, technology, the environment, and more -- from major news services and leading universities, scientific journals, and research organizations.